Article
  • Bio-polyurethane Polymerized with Polyol Obtained from Liquefaction of a Biomass and Isocyanate, and its Optimization
  • Eun Ju Lee, KiRyong Ha*, and Kwang-Hee Lim

  • Department of Chemical Engineering, Daegu University, Gyeongbuk 38453, Korea

    *Department of Chemical Engineering, Keimyung University, Daegu 42601, Korea

  • 바이오매스 액화에 의한 폴리올과 이소시아네이트가 중합된 바이오폴리우레탄 제조 및 최적화
  • 이은주 · 하기룡* · 임광희

  • 대구대학교 공과대학 화학공학과, *계명대학교 공과대학 화학공학과

Abstract

Polyurethane (PU) foams were prepared according to the experimental plan of central composite design (CCD). Liquefied polyol was prepared by lignocellulosic liquefaction of biomass (saw dust, Larix kaempferi) under the optimal liquefaction condition suggested by Lee et al. The density, cream time, rise time and compressive strength of the PU foams prepared in this study were applied as dependent variables of process condition for the PU foam-preparation, and were measured. The distribution of the density and the compressive strength of the PU foams prepared in this study were turned out to be nearly consistent with those of PU foam, respectively, reported by Xu et al. and Alma et al. The correlation of their dependent variables with three independent process variables such as mixing time, the ratio of liquefied polyol to polyethylene glycol, and the amount of added distilled water, was regressively analyzed by response surface methodology. In addition, the proper condition for the preparation of the PU foams was suggested according to the degree of development and the status of cells of the PU foams prepared in this study, observed by SEM.


폴리우레탄(PU) 폼 제조를 위한 central composite design(CCD) 실험계획에 따라서 PU 폼을 제조하였다. 액화폴리올은 리그노셀루로식 폴리올로서 Lee 등에 의하여 도출된 리그노셀루로식 액화실험의 최적화 액화조건에 따른 바이오매스(saw dust, Larix kaempferi) 액화에 의해 제조된 바이오폴리올을 사용하였다. CCD 실험계획에 따른 각각의 실험조건에서 제조된 PU 폼의 밀도, cream time, rise time 및 압축강도를 PU 폼 제조의 종속변수로서 각각 측정하였다. 본 연구에서 CCD의 실험설계에 따라서 제조된 PU 폼의 밀도 및 압축강도에 대한 분포는 Xu 등과 Alma 등이 보고한 값과 거의 일치하였다. 이러한 PU 폼 제조의 종속변수에 대한 세 개의 공정변수(교반시간, 액화폴리올 대 폴리에틸렌 글리콜의 비 및 부가된 증류수의 양)의 상관관계에 대한 회귀분석을 반응표면분석법으로 분석하였다. 또한 SEM으로 관찰된 셀 발달 정도와 셀 상태로부터 PU 폼 제조의 최적조건을 도출하였다


Keywords: lignocellulosic liquefaction, polyol, bio-polyurethane, polyurethane foam, biomass

  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2018 Impact Factor : 0.500
  • Indexed in SCIE

This Article

  • 2019; 43(6): 899-913

    Published online Nov 25, 2019

  • 10.7317/pk.2019.43.6.899
  • Received on Jul 23, 2019
  • Revised on Aug 12, 2019
  • Accepted on Aug 15, 2019

Correspondence to

  • Kwang-Hee Lim
  • Department of Chemical Engineering, Daegu University, Gyeongbuk 38453, Korea

  • E-mail: khlim@daegu.ac.kr